Section 180.220 - Atrazine; tolerances for residues(a)General. Tolerances are established for the combined residues of the herbicide atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine) and its chlorinated metabolites 2-amino-4-chloro-6-isopropylamino-s-triazine, 2-amino-4-chloro-6-ethylamino-s-triazine, and 2,4-diamino-6-chloro-s-triazine, in or on the following food commodities: | Commodity | Parts per
million |
| Cattle, fat | 0.02 |
| Cattle, meat | 0.02 |
| Cattle, meat byproducts | 0.02 |
| Corn, field, forage | 1.5 |
| Corn, field, grain | 0.20 |
| Corn, field, stover | 0.5 |
| Corn, pop, forage | 1.5 |
| Corn, pop, grain | 0.20 |
| Corn, pop, stover | 0.5 |
| Corn, sweet, forage | 15 |
| Corn, sweet, kernel plus cob with husks removed | 0.20 |
| Corn, sweet, stover | 2.0 |
| Goat, fat | 0.02 |
| Goat, meat | 0.02 |
| Goat, meat byproducts | 0.02 |
| Grass, forage | 4.0 |
| Grass, hay | 4.0 |
| Guava | 0.05 |
| Horse, fat | 0.02 |
| Horse, meat | 0.02 |
| Horse, meat byproducts | 0.02 |
| Milk | 0.02 |
| Nut, macadamia | 0.20 |
| Sheep, fat | 0.02 |
| Sheep, meat | 0.02 |
| Sheep, meat byproducts | 0.02 |
| Sorghum, forage, forage | 0.25 |
| Sorghum, grain, forage | 0.25 |
| Sorghum, grain, grain | 0.20 |
| Sorghum, grain, stover | 0.50 |
| Sugarcane, cane | 0.20 |
| Wheat, forage | 1.5 |
| Wheat, grain | 0.10 |
| Wheat, hay | 5.0 |
| Wheat, straw | 0.50 |
(b)Section 18 emergency exemptions. [Reserved](c)Tolerances with regional registrations. [Reserved](d)Indirect or inadvertent residues. Tolerances are established for indirect or inadvertant residues of atrazine, 2-chloro-4-ethylamino-6-isopropylamino-s-triazine, in or on the following raw agricultural commodity when present therein as a result of application of atrazine to the growing crops in paragraph (a) of this section: | Commodity | Parts per million |
| Vegetable, leafy, except brassica, group 4 | 0.25 |
43 FR 29121, July 6, 1978, as amended at 44 FR 67116, Nov. 23, 1979; 47 FR 3771, Jan. 27, 1982; 47 FR 8012, Feb. 24, 1982; 63 FR 57075, Oct. 26, 1998; 67 FR 46893, July 17, 2002; 69 FR 6567, Feb. 11, 2004; 72 FR 35666, June 29, 2007; 72 FR 53454, Sept. 19, 2007; 73 FR 37852, July 2, 2008; 76 FR 56654, Sept. 14, 2011